All terms
Glossary · Backlog

INVEST

INVEST is a mnemonic for the qualities of a well-formed user story — Independent, Negotiable, Valuable, Estimable, Small, and Testable. Independence matters most: stories that can ship on their own keep flow smooth and reduce coupling. Running each story through INVEST catches vague or oversized work before it reaches a sprint.

Related terms
User Story
A small, user-centered description of a need: as a role, I want an action, so that an outcome.
Backlog Grooming (Refinement)
The ongoing work of clarifying, splitting, estimating, and reordering backlog items.
Definition of Ready (DoR)
The criteria a backlog item must meet before a team will pull it into a sprint.
Put the method into practice.
Prodstack is the AI product operating system that turns terms like this into shipped, evidence-backed work — from discovery to growth.
Start your 7 days free trial
// Newsletter
Field notes, in your inbox.

Evidence‑driven thinking on discovery, prioritization, specs, and shipping — plus new articles the moment they drop. No noise.